Affordable Housing Project -NARSINGHPURA ,JAIPUR
- To reduce the housing shortage in the State, especially in EWS/LIG categories.
- To bring down the cost of EWS & LIG categories of houses to affordable limits.
- To take up large scale construction of Affordable Housing (with focus on EWS & LIG housing.)
- To involve Private developers in the construction of EWS/LIG categories of houses by offering various attractive incentives.
- To create Rental Housing as transit accommodation for migrants to urban areas.
Name of Work:- Construction of EWS/LIG/MIG (G+3) flats at NARSINGHPURA,
AJMER ROAD JAIPUR
Date of commencement:- 07/01/2011
Date of completion:- 09/01/2013
Project cost:- 14.30 Crores INR
Total No. of Flats:- 432
Materials used at site & Testing
- i) Cement
Portland cement is composed of calcium silicates and aluminate and aluminoferrite.
The grades are-
- 33 grade
- 43 grade
- 53 grade
In “affordable housing project” 43 grade PPC cement is used.
Advantages of using Portland pozzolana
- Contribute to strength, impermeability and sulphate resistance.
- Contributes to workability, reduced bleeding and controls destructive expansion from alkali-aggregate reaction.
- Reduces heat of hydration
- Colour of PPC comes from the colour of the pozzolanic material used
Initial and final setting time of cement
- Initial setting time-1/2 hr (30 mins)
- Final setting time-10 hr
- Black => very good quality
- Blue => good
- Whitish =>bad quality
Workability of Concrete
- Workability is the property that determines the ease with which freshly mixed concrete can be placed and finished without segregation.
- Workability is difficult to measure but ready-mix companies usually have experience in determining the proper mix.
- Therefore, it is important to accurately describe what the concrete is to be used for, and how it will be placed.
SLUMP TEST OF WORKABILITY
- Used for the measurement of a property of fresh concrete.
- The test is an empirical test
The slump test result is a measure of the behavior of a compacted inverted cone of concrete under the action of gravity. It measures the consistency or the wetness of concrete.
Limitations of the slump test
- Test fails to determine the difference in workability in stiff mixes which have zero slump, or for wet mixes that give a collapse slump.
- It is limited to concrete formed of aggregates of less than 38 mm.
Compressive strength test
- To determine the characteristic strength of the concrete
- Very important to the acceptance of in-situ concrete work since it demonstrates the strength of the design mix.